KR100509860B1 - Sign board using miniature type fluroscent lamps - Google Patents

Abstract

The present invention relates to a sign board using a capillary fluorescent lamp, and more specifically, to a smaller and thinner than a conventional billboard using a conventional fluorescent lamp, and also easy to attach and detach the fluorescent lamp and greatly reduce power consumption. The present invention relates to a billboard using a tubular fluorescent lamp which can save energy.

According to the present invention, an advertisement plate having an advertisement content attached to an outer surface thereof and having a fluorescent lamp for illumination installed inside the billboard is provided, the accommodation grooves 32 for storing both ends of the plurality of tubular fluorescent lamps 20 and 24. A top plate 30 formed at side surfaces thereof and having wire storage grooves 34 for connecting wires 32 and connecting wires 28 for supplying power to fluorescent lamps 20 and 24; In close contact with and coupled to the top plate 30, accommodating grooves 42 for accommodating both ends of the plurality of tubular fluorescent lamps 20 and 24 are formed in the side surfaces thereof, respectively, and connect the accommodating grooves 42 and wires. A lower plate 40 on which wire storage grooves 44 for receiving 28 are formed; A driving circuit for supplying power to the tubular fluorescent lamps 20 and 24 through the wires 28 extending through the wire storage grooves 34 and 44 formed by the combination of the upper plate 30 and the lower plate 40. 50).

Description

Sign board using miniature type fluroscent lamps}

The present invention relates to a sign board using a capillary fluorescent lamp, and more specifically, to a smaller and thinner than a conventional billboard using a conventional fluorescent lamp, and also easy to attach and detach the fluorescent lamp and greatly reduce power consumption. The present invention relates to a billboard using a tubular fluorescent lamp which can save energy.

Conventional billboards that use fluorescent lamps as conventional backlights are box-shaped, and the front panel is made of translucent acrylic plates on the front side, and the front side of the box is provided with fluorescent lamps installed on the back of the box and turned on by supplying power to the fluorescent lamps. It was configured to recognize letters or pictures displayed on the surface of the board. Or, both sides are composed of opaque acrylic plates, and both sides are used for advertisement.

1 is a perspective view showing a separation state of a conventional billboard used in the prior art. As shown, the front panel 12 of the billboard is attached to the character or a picture 14 for the advertisement, a plurality of fluorescent lamps 16 used as a light source is electrically connected to the inside of the billboard body 10 have. Since the fluorescent lamps 16 connect the electrode terminals formed at both ends by using wires, the wiring inside the billboard 10 is complicated, and a ballast 18 must be provided for each fluorescent lamp 16. This increases the total volume of the billboard.

In addition, general fluorescent lamps used in billboards are rated at 220V and operate at a low frequency with an operating frequency of 60Hz, but power consumption is more than 20W or 40W, resulting in power consumption and cost problems. do. In addition, when the size of the billboard increases, the difficulty of producing the billboard increases, and there is a problem that a ladder mounting vehicle must be used even when the billboard is installed.

Another problem is a problem caused by a decrease in luminance or a failure of a fluorescent lamp due to prolonged use. That is, a general fluorescent lamp has a decrease in luminance characteristics as the use time increases. There is no conventional method except replacing a fluorescent lamp having a reduced luminance characteristic. However, in order to replace the broken fluorescent lamp, the billboard must be dismantled, which takes a long time and needs to be performed by a skilled worker.

In addition, when the billboard is installed high, the operator goes up using a ladder lamp to replace the fluorescent lamp or give up the replacement and use it in a state where the lighting does not work. In the latter case, some or all of the billboards are turned off, which may be counterproductive.

The present invention is to solve the above problems, an object of the present invention can be manufactured in a smaller, thinner than the billboard using the conventional fluorescent lamps, and also easy to attach and detach the fluorescent lamps, the power consumption is significantly reduced capillary fluorescent lamps To provide a billboard using.

Another object of the present invention is a capillary fluorescent lamp having a driving circuit which can maintain a stable operating state of a billboard by improving power factor and miniaturization, preventing the lamp from being connected, or preventing overcurrent and overvoltage from being applied to the conventionally used driving circuit. To provide a billboard using.

In the billboard using the tubular fluorescent lamp of the present invention for achieving the above object, the advertising content is attached to the outer surface and is installed by installing a fluorescent lamp for illumination in the interior of the billboard, a plurality of tubular fluorescent lamps An upper plate formed with side grooves for accommodating both ends, and having wire connecting grooves connecting the accommodating grooves and accommodating the electric wires; A lower plate which is in close contact with and coupled to the upper plate and has receiving grooves for receiving both ends of the plurality of tubular fluorescent lamps respectively formed in the side portion, and which has wire connection grooves for connecting the receiving grooves and storing the electric wires; It characterized in that it comprises a drive circuit for supplying power to the tubular fluorescent lamp through the wire extending through the wire storage groove formed by the combination of the upper plate and the lower plate.

According to another feature of the present invention, the soldering stripline 56 extends in the longitudinal direction to fix the plurality of capillary fluorescent lamps 20, and the internal electrodes 22 at both ends of the capillary fluorescent lamps 20 are extended. Soldering pads (56a) for fixing the is formed adjacent to the inside, one end of the strip line 56, the fixing PCB 52 which is open for power supply from the outside, and the fixing PCB 52 A lower plate 40a for accommodating the upper plate 30a, a lower plate 40a coupled to the lower plate 40a, and a space for accommodating the fixing PCB 52, the upper plate 30a formed on an inner surface thereof, and the strip line 56. And a drive circuit 50a for supplying power to the tubular fluorescent lamp through the strip line 56, and a strip line extension 56b is formed inward from the strip line 56, and the soldering pad 56a and strip line extension are formed. Current limiting condenser with one end connected to each section 56b It is characterized in that (54) is further provided.

Hereinafter, with reference to the accompanying drawings will be described in detail the billboard using the tubular fluorescent lamp of the present invention.

The present invention is an advertisement board configured using a tubular fluorescent lamp having a diameter of about 2 to 4mm, and as the diameter of the fluorescent lamp is reduced, the volume of the billboard is reduced and the handling is easy. In particular, by connecting and controlling a plurality of tubular fluorescent lamps in parallel, the concurrency of the control is improved, and the replacement of the fluorescent lamps at the end of life is easy.

Figure 3 shows the structure of a conventional tubular fluorescent lamp used. As shown, a tubular fluorescent lamp is a thin fluorescent lamp having a diameter of about 2 to 4 mm, and is used for a backlight unit of a TFT-LCD. Because of the small diameter, the brightness is lower than that of a general fluorescent lamp, so it is almost impossible to use in a conventional billboard. The tubular fluorescent lamp is classified into a cold cathode fluorescent lamp (Cold Cathode FL) and an external electrode fluorescent lamp (External Electrode FL) according to the installation form of the electrode.

Referring to FIG. 3 again, the cold cathode fluorescent lamp 20 has an (internal) electrode 22 inserted into both ends thereof, and the external electrode fluorescent lamp 24 has an (outer) electrode 26 of the fluorescent lamp. It is formed on the outer circumferential surface. When high voltage power is applied to the electrodes 22 and 24, the fluorescent lamp is operated. The tubular fluorescent lamps 20 and 24 as described above are arranged in the form of spaced apart at regular intervals as shown in FIG. For convenience of description, the fluorescent lamp 24 with the external electrode 26 shows all the fluorescent lamps, but the present invention is not limited thereto.

Each of the fluorescent lamps 24 is spaced at regular intervals and both ends are energized by the wires 28. As shown in the figure, since the fluorescent lamps constituted by the present invention are all compactly driven at low power, there is no need to use a ballast (18 of FIG. 1) that is conventionally used. Instead all fluorescent lamps 24 are connected in parallel by a pair of wires 28 extending to apply a high voltage. This parallel connection structure has the advantage that all the fluorescent lamps can be controlled at the same time.

Referring back to FIG. 2, the driving circuit 50 is connected to the wire 28 to supply power required for the fluorescent lamp 24. The driving circuit 50 supplies power for operating the fluorescent lamp 24 using a commercial power source, which is conventionally used, and includes a line filter, a rectifying circuit, an inverter, and the like, in detail through one embodiment of a specific circuit. It is explained. As described above, the power is stably supplied by supplying the fluorescent lamp driving voltage using the inverter. The number of uses of the fluorescent lamps 24 can be changed according to the area of the billboard, and the separation distance between the fluorescent lamps is also adjustable. In the case of using the electric wire, the connection between the electrodes 22 and 26 formed in the fluorescent lamps 20 and 24 and the electric wire 28 covers the electric wire 28 as in the related art, and is electrically connected by using a soldering method. To maintain contact. Also another electrical connection scheme using conductors is described later.

4 is a perspective view illustrating the structure of the lower plate 40 among the upper plate 30 and the lower plate 40 for supporting and fixing the fluorescent lamps 24 in the present invention. In fact, the structure of the upper plate 30 and the lower plate 40 is symmetrical, the difference is that the outer surface of the upper plate 30 is attached to a diffuser plate for uniformly diffusing light, the inside of the lower plate 40 fluorescent lamp 24 The difference is that the reflection plate is installed to reflect the light emitted from the lower side to the upper side, but not applied when both sides are used in advertising.

The upper plate 30 and the lower plate 40 may be configured like a conventional advertisement board by using an acrylic plate or the like that is transparent or opaque, respectively. In addition, it is possible to reduce the overall volume of the billboard by minimizing the thickness of the upper plate 30 and the lower plate 40. In addition, the billboard of the present invention can be applied not only to the billboard but also to a small frame for storing the photograph.

Referring to FIG. 4 again, the lower plate 40 has a plurality of receiving grooves 42 which can fix the fluorescent lamp 24 at both sides thereof at regular intervals, and between the receiving grooves 42. The wire storage grooves 44 are formed in a direction perpendicular to the 42. The wire storage groove 44 is for accommodating the electric wire 28 for supplying power to the fluorescent lamps 24, the electric wire 28 of the fluorescent lamp 24 after being peeled off the receiving groove 42 portion The electrode 26 is electrically connected by soldering or the like. The fluorescent lamp 24 is fixed after being fitted in the receiving groove 42 as shown in the figure. After peeling, the connection with the electrode may be equally applied to the cold cathode and the external electrode fluorescent lamps 20 and 24.

The lower plate 40 may be manufactured in other forms as long as the receiving grooves 42 are formed in both side surfaces as well as a rectangular shape as shown in the drawing. This is to give various changes to the shape of the billboard. Of course, the tubular fluorescent lamps 24 should be disposed at the bottom of the portion (character or graphic) that is the focal point of the advertisement.

It is preferable that the accommodating groove 42 or the electric wire storing groove 44 has a semi-cylindrical shape. In addition, as shown in FIG. 7, the accommodating groove 32 and the wire storing groove 34 formed in the upper plate 30 also have a semi-cylindrical shape, such that the upper plate 30 and the lower plate 40 are fluorescent lamps 24. ), There is an advantage that the coupling part with the fluorescent lamp 24 forms a perfect circle, thereby fixing it tightly. Of course, it is also possible to change the shape of the receiving grooves (32, 42) in accordance with the end shape of the fluorescent lamp 24, all such modifications and changes will be within the scope of the present invention.

The wire receiving groove 44 located at the outermost portion extends to the side surface of the lower plate 40 to form a drawing space of the wire 28. Of course, the wire storage groove 34 formed in the upper plate 30 is also formed in the same way.

In addition to supplying the voltage using the electric wire 28, it is possible to supply electric power by using a conductor instead of the electric wire 28 as another method. In other words, the inside of the wire storage grooves 34 and 44 is filled with a conductor, and the inside of the receiving grooves 32 and 42 for accommodating the ends of the fluorescent lamp is also filled with the conductors. To form the same electric passage. Forming an electric passage using the conductor in this way has the advantage that can be easily replaced when replacing the fluorescent lamp. It is apparent that the use of a conductor can also be applied to both the fluorescent lamps 20 and 24.

5 is a plan view illustrating a state in which the fluorescent lamps 24 are inserted into the lower plate 40 and the driving circuit 50 for simultaneously driving the fluorescent lamps 24 is connected. As shown in the figure, a plurality of fluorescent lamps 24 are arranged in parallel, and wires 28 are connected to each electrode 26, and in particular, a reflector plate 46 is installed on the inner bottom of the lower plate 40. Thus, the light emitted from the fluorescent lamp 24 is reflected. The upper plate 30 as shown in FIG. 6 is coupled to the upper surface of the lower plate 40 in a state in which fluorescent lamps 24 are disposed on the lower plate 40 and power is supplied to the electrode 26 through the wires 28. To construct a billboard. The upper plate 30 has a structure symmetrical with the lower plate 40 inherently. A diffusion plate 36 is attached to the outer surface of the upper plate 30 as shown in the drawing. The diffusion plate 36 is for uniformly emitting the light emitted from the fluorescent lamp 24. Letters or figures are attached to the upper surface of the diffusion plate 36.

Although the drawing illustrates that the diffusion plate 36 is attached to the upper surface of the upper plate 30, and the reflecting plate 46 is attached to the inner surface of the lower plate 40, both sides of the lower plate 40 can be used as an advertisement board. It is possible to attach the diffusion plate 36 to the outer side as well. In this case, the reflector 46 must be removed.

FIG. 7 is a partial cross-sectional view showing a coupling state between the upper plate 30 and the lower plate 40, in particular, taken along line A-A of FIG. The upper plate 30 is formed with a semi-circular accommodating groove 32 protruding upward from the mating surface with the lower plate 40, and the lower plate 40 is formed with semi-circular accommodating grooves 42 protruding downward. When this is combined to form a circular space, the circular end (part where the electrode 26 is formed) of the fluorescent lamp 24 is inserted and fixed in this circular space. The thickness of the upper plate 30 and the lower plate 40 may be changed according to the thickness of the fluorescent lamp 24 and the reflecting plate. In FIG. 7, the thickness D2 is slightly larger than the thickness of the fluorescent lamp 24, and the overall thickness of the billboard can be significantly reduced by minimizing the thicknesses D1-D2 of the remaining portions.

Coupling of the upper plate 30 and the lower plate 40 uses a coupling means such as bolts and nuts penetrating the upper plate and the lower plate, which are conventionally used, or forms protrusions and depressions on respective inner surfaces of the upper plate and the lower plate which are in close contact with each other. It can be combined by using a frame to be combined in a press-fit method or to surround the outside of the advertising board coupled to the upper plate and the lower plate. This coupling means is preferably selected in consideration of the appearance.

The driving circuit 50 for supplying power to the fluorescent lamp 24 is configured to use a commercial power source commonly used, a line filter for receiving a commercial AC power for home use, and an AC voltage input through the line filter. And a rectifier circuit for converting the signal into a predetermined DC voltage, and an inverter for outputting the DC voltage output from the DC circuit to a high voltage AC voltage. By such a configuration, the billboard according to the present invention can be used at any place using a commercial power source. A detailed circuit of one embodiment of such a driving circuit 50 is shown in FIG.

Referring to the drawings, the fuse (F1) and the resistor (R11) is a protection circuit for limiting the over-current and inrush current that can occur when using a commercial power supply. The commercial power supply 220V passes through the noise filter composed of the capacitors C11 and C12 and the transformer T1 through the fuse and the resistor R11 to remove electrical noise generated during driving. The AC voltage from which the noise is removed is rectified in a smoothing circuit composed of the bridge rectifier D11 and the capacitors C13 and C14 and outputted as direct current. The capacitor C13 is for smoothing the rectified DC, and the capacitor C14 is for removing high frequency noise of the rectified DC voltage.

The rectified DC voltage is converted into an AC voltage through an inverter adopting a half bridge method and applied to the fluorescent lamps 20 and 24. The half-bridge type inverter consists of capacitors C21 and C22, diodes D21 and D22, transistors Q1 and Q2, and a transformer T2. In addition, for starting the half-bridge inverter, it is started and started by a starter composed of a resistor R21, a capacitor C23, and a die solution D27.

The current input through the resistor R21 is charged by the capacitor C23 and then turned on above the breaker voltage by the die solution D27, thereby forming a half bridge circuit composed of the resistor R23 and the diode D26. The low side transistors of the transistors are driven, and the phase switching operation is performed by the given time constant. At this time, the transformer T2 transmits a high voltage to the secondary side by the boost ratio of the transformer. The capacitor C25 provided on the secondary side of the transformer T2 is provided when the cold cathode fluorescent lamp 20 with the internal electrode 22 is used as the current limiting capacitor. On the other hand, in the case of the external electrode fluorescent lamp 24 using the external electrode 26, the capacitor C25 is not necessary.

In addition, the driving circuit 50 further includes an applied voltage controller and a brightness controller (not shown) that can adjust the voltage size to adjust the luminance applied to the fluorescent lamps 20 and 24. For example, the applied voltage control unit may control the magnitude of the voltage input to the inverter in a PWM manner to adjust the voltage size. By adjusting the voltage, the brightness of the fluorescent lamps 202 and 4 can be controlled so that the user can control the brightness of the billboard. Since the applied voltage control unit can be easily achieved by the prior art, a detailed description thereof will be omitted. The brightness controller may be configured by using a volume as a switch operated by a user to adjust luminance.

Figure 10 shows the connection of another embodiment of the capillary fluorescent lamp according to the present invention. In this embodiment, circular spaces for end storage of the plurality of fluorescent lamps are not formed on both the upper plate and the lower plate. Instead, the fluorescent lamps are fixed by fixing the ends of the internal electrodes protruding at both ends of the fluorescent lamps to the soldering pads attached on the fixing PCB, and thus, a small storage space to cover the soldering pads on the inner surface of the top plate. This is characterized by being formed. Of course, it is also possible to form a space for accommodating the fixing PCB on the inner surface of the lower plate.

Referring to FIG. 10 again, fixing PCBs 52 are arranged at both ends of the plurality of tubular fluorescent lamps 20 arranged vertically so as to be symmetrical, so that the internal electrodes 22 of the tubular fluorescent lamps 20 are positioned. ) Is fixed. For convenience of explanation, it will be described with reference to the fixing PCB 52 on one side.

The fixing PCB 52 has a soldering stripline 56 extending in the longitudinal direction, and a plurality of soldering pads 56a are electrically formed at regular intervals to be adjacent to each other. The soldering pad 56a is for fixing the internal electrode 22 attached to the end of the capillary fluorescent lamp 20. The soldering pad 56a may be soldered in a pad form to easily solder the electrode. Although there is a slight difference in shape between the soldering pad of the stripline 56 and the soldering pad 56a of the lower side shown in the drawing, there is no problem in fixing the internal electrode 22, and the electrical It can also be configured in other forms such as circular, rhombus, or ellipse as long as they are connected.

In the present invention, it is also possible to provide a current limiting capacitor 54 on one side of the tubular fluorescent lamp 20 in order to prevent the overcurrent from damaging the tubular fluorescent lamp 20. Referring again to FIG. 10, a state where the current limiting capacitor 54 is installed between the soldering stripline 56 and the soldering pad 56a is illustrated at the lower ends of the two tubular fluorescent lamps 20 shown on the right side. have. In the drawing, for convenience of description, both the state in which the current limiting capacitor 54 is not installed and the state in which it is installed are shown. However, such an installation state can be selectively performed, and the same applies to the following description. The current limiting capacitor 54 can also be provided in the drive circuit 50a for supplying power to the tubular fluorescent lamp 20.

FIG. 11 is a partially enlarged plan view of the fixing PCB 52 of FIG. 10. As shown, the internal electrodes 22 protruding from both ends of the capillary fluorescent lamp 20 are fixed to the soldering pad 56a by soldering. In addition, the soldering pad 56a is electrically connected to the stripline 56. On the other hand, when the current limiting capacitor 54 is to be installed, the strip line extension 56b is formed and connected to the soldering pad 56a. FIG. 12 is a side view of the fixing PCB 52, which shows the state of the internal electrode 22 fused to the soldering pad 56a and the state in which the current limiting capacitor 54 is provided. In this embodiment of the present invention, it is difficult to use the capillary fluorescent lamp 24 having external electrodes unless the structure of the fixing PCB 52 is changed.

FIG. 13 shows the configuration of a billboard constructed using the fixing PCB 52 of FIG. The fixing PCB 52 is provided in the both ends of the lower board 40a, and the tubular fluorescent lamp 20 is being fixed. Power is supplied to the stripline 56 which is opened as described above through the driving circuit 50a.

The driving circuit 50a for supplying power to the tubular fluorescent lamp 20 is configured to use a commercial power source that is commonly used, and is provided through a line filter for receiving a commercial AC power for home use and the line filter. And a rectifier circuit for converting an AC voltage into a predetermined DC voltage, and an inverter for outputting a DC voltage output from the DC circuit to an AC voltage having a high voltage. By such a configuration, the billboard according to the present invention can be used at any place using a commercial power source.

A detailed circuit of an embodiment of such a driving circuit is shown in FIG.

Referring to Figure 14, the fuse (F1) and the inrush current limiting resistor (RT1) was used as a protection circuit for limiting the over-current and inrush current that may occur when using a commercial power supply. The commercial power supply 220V passes through the noise filter composed of the capacitors C1 and C2 and the transformer T1 through the fuse F1 and the resistor RT1, thereby removing electrical noise generated during driving.

The noise-free AC voltage is rectified in a smoothing circuit composed of diodes D1, D2, D3, D4 and capacitors C3, C4, C5, and C6, and is output as direct current. The capacitors C3, C4, C5, and C6 are for smoothing rectified direct current, and the resistor R1 is a load for discharging the charge charged in the capacitors C3, C4, C5, and C6 when the power is removed. Used as

The rectified DC voltage is converted into an AC voltage through an inverter adopting a half bridge method and applied to a fluorescent lamp. The half-bridge type inverter is shown in the lower side of the figure, and is composed of capacitors C8 and C9, diodes D10 and D11, transistors Q1 and Q2, and transformer T2. In addition, the start-up is performed by the self-starting start circuit (part) composed of the resistor R2, the capacitor C7, and the die liquid Q3 for starting the half-bridge inverter.

The current input through the resistor R2 is charged by the capacitor C7 and then turned on above the breaker voltage by the die solution Q3, thereby forming a half bridge circuit composed of the resistor R5 and the diode D9. The low side transistors of the transistors are driven, and the phase switching operation is performed by the given time constant. At this time, the transformer T2 transmits a high voltage to the secondary side by the boost ratio of the transformer. The current limiting capacitor to be used in the transformer T2 is used in the fluorescent lamp fixing PCB 52 of the advertisement board, so it is not used on the circuit. Of course, it is obvious that it can be added to the driving circuit without using the fixing PCB 52.

The current limiting capacitor is indicated by reference numeral 54 in FIGS. 10 and 11. Therefore, when the current limiting capacitor 54 is used for the transformer T2 of the driving circuit 50a, the current limiting capacitor 54 of FIGS. 10 and 11 is not necessary, and the tubular fluorescent lamp 20 is protected. It is also possible to provide a current limiting capacitor 54 for this purpose.

In addition, the present invention further includes an applied voltage controller and a brightness controller (not shown) that can adjust the voltage size to adjust the luminance applied to the fluorescent lamp 20 in the driving circuit. For example, the applied voltage control unit may control the magnitude of the voltage input to the inverter in a PWM manner to adjust the voltage size. By adjusting the voltage, the brightness of the fluorescent lamp is controlled so that the user can control the brightness of the billboard.

Since the applied voltage control unit can be easily achieved by the prior art, a detailed description thereof will be omitted. The brightness controller may be configured by using a volume as a switch operated by a user to adjust luminance. In addition, resistors to protect diodes D12, D13, thyristors Q4, C12, R9 for conversion to voltage, R8 for overcurrent protection of Zener diode D14, R7, C11 and thyristors to prevent chattering of thyristors from overcurrent The protection circuit composed of R6 was used as a load opening prevention circuit to prevent the destruction of the driving circuit when the lamp was opened. It is apparent that the driving circuit 50a can be used in place of the driving circuit 50 of FIG.

15 and 16 show a state in which two parts are separated as another embodiment of the driving circuit used in the billboard of the present invention. As in the other embodiments, the driving circuit can be used in both a cold cathode fluorescent lamp having an electrode inside and an external electrode fluorescent lamp having an electrode outside.

The driving circuit shown in FIGS. 15 and 16 has a power factor correction circuit for improving the efficiency of the input power, and also detects the input voltage and turns off the operation of the inverter when the input voltage is higher than the set voltage. And an overcurrent detection circuit for blocking an overcurrent input due to an abnormal load, a detection circuit for opening a load (lamp in the present invention), and the like.

15 shows an overcurrent protection portion 61, a noise filter portion 62, a bridge rectification portion 63 and an active power factor improvement portion 64 in the driving circuit. In addition, an inverter is shown in FIG. 16. The inverter includes a starter 65, a controller 66, a switching unit 67, a resonator 68, a voltage detector 69, and a controller disconnection unit. 70, a current detecting unit 71, and a lamp connection detecting unit 72, the detailed operating states are as follows.

The driving circuit of the present invention includes an overcurrent protection unit 61 for limiting overcurrent, inrush current and / or surge voltage generated when a commercial power supply is used, a noise filter 62 for blocking electrical noise, and the noise filter unit. Bridge rectification unit 63 for rectifying the commercial AC voltage passing through the 62, an active power factor improving unit 64 for increasing the efficiency of the DC voltage passed through the bridge rectification unit 63, and the active type A starter 65 for generating drive power of the controller 66 as an inverter for supplying power to the lamp by using a DC voltage input through the power factor improving unit 64 and the power supply of the starter 65. A controller 66 which is operated by a supply to generate a switching pulse for operating the inverter, a switching unit 67 for generating a frequency signal using the switching pulse output from the controller 66, and The controller 66 generates a high frequency signal using the frequency signal input from the switching unit 67 and detects the high and low voltages applied to the inverter. A voltage detector 69 for controlling the operation state of the controller, a controller breaker 70 for stopping the operation of the controller for operating the inverter when an overcurrent flows to the inverter, and detecting the current flowing through the inverter A current detection unit 71 for transmitting an overcurrent detection state to the 70, and a lamp connection detection unit 72 for detecting the connection state of the lamp to stop the operation of the inverter when the lamp is not connected.

Referring to the operating state of the drive circuit having the above configuration as follows.

Referring first to Figure 15, the fuse (F1), the surge voltage limiting TNR (TNR1), the inrush current limiting resistor (RT1) constitutes an overcurrent protection unit 61, the overcurrent that may occur when using commercial power (VAC) It is used as a protection circuit to limit inrush current and / or surge voltage. The commercial power source VAC passes through the fuse F1 and the inrush current limiting resistor RT1, and then passes through the noise filter 62 composed of the capacitors C1, C2, C3, C4 and the line filter T1. Noise is cut off.

The AC voltage from which the noise is removed by the noise filter 62 is rectified to the DC voltage while passing through the bridge rectifier 63 composed of the diodes D2, D3, D5, and D6, and then input to the capacitor C6. An active power factor improving unit 64 is connected to the condenser C6 to obtain high efficiency.

As shown, the active power factor improving unit 64 includes an inductor T2, a switching FET Q1, a gate current limiting resistor R7, a smoothing capacitor C7, an overcurrent detecting resistor R14, and the like. Resistor R11 for transferring an overcurrent signal to the controller U1, a capacitor C12, a controller U1 for controlling an active power factor improvement circuit, and an input and an output voltage for detecting and inputting the input voltage to the controller U1. Resistors R2, R9, R13, R4, R8, and R10, a resistor R1 and a capacitor C9 for applying an initial starting voltage to the controller U1, a diode D7 for supplying a stable power source, A resistor R5 and a capacitor C8 for compensating the comparator of the capacitor C6 and the detection circuit, and high-speed diodes D1 and D4 for transmitting the output voltage and the current of the power factor improving circuit are included.

The resistor R6 discharges the charge charged in the smoothing capacitor when the inverter (described later with reference to FIG. 16) is turned off to remove the high voltage surge that may be caused by the charge charge in advance.

The DC voltage passed through the active power factor improving unit 64 as described above can always maintain a constant voltage level by the switching operation by the active element, and can increase the efficiency of the output voltage and current compared to the passive power factor circuit.

The DC voltage passing through the active power factor improving unit 64 is applied to the inverter shown in FIG. 16, and the inverter generates an AC voltage and a current of high voltage and supplies it to the lamp. The inverter circuit is composed of half bridges. The frequency of the half bridges is fixedly driven by the controller and the frequency is driven by the charge / discharge circuit composed of resistors and capacitors. At this time, the inverter circuit can easily implement the optimum frequency according to the characteristics of the lamp. The driving state will be described with reference to FIG. 16 as follows.

The DC voltage passing through the active power factor improving unit 64 generates a power source capable of driving the controller 66 by the starter 65 composed of a resistor and a capacitor. The generated power is input to the controller 66 so that the controller 66 performs initial start-up operation and outputs a switching pulse for high voltage generation. The frequency of the controller 66 is generated by a time constant circuit composed of resistors R20 and R21 and a capacitor C21.

In addition, the switching pulse generated by the controller 66 is input to the switching unit 67 composed of the resistors R19 and R22 and the switching elements Q2 and Q4 so that the transformer T3 and the capacitors C14, C16 and C18 The resonator unit 68 is configured to supply AC high voltage through the secondary terminal of the transformer 69. The controller 66 drives a half bridge by using a bootstrap method to supply auxiliary power to the capacitors C13 and C15 and the diodes D8, D10, and D11.

In addition, the current detector 71 composed of the resistors R24 and R27, the capacitor C23, and the diodes D16 and D17 detects a current flowing through the inverter and blocks the operation of the inverter circuit when an overcurrent is input. At this time, the driving of the inverter is stopped by operating the controller breaker 70 including the thyristor Q6, the diode D13, and the capacitor C22 to block the driving of the controller 66. At this time, the detection of the overcurrent is set by the resistor R27 and the diode D16 to operate above a certain voltage.

In addition, when a load (fluorescent lamp) is not connected to the inverter, a high voltage is applied to the output transformer T3 of the inverter to prevent the transformer T3 from being destroyed, and thus the diodes D14 and D15 and the resistors R26 and R28. The lamp connection detection unit 72 composed of an over-capacitor C24 checks whether the lamp is connected and stops driving the inverter when the lamp is opened.

At this time, the presence or absence of the lamp detects the voltage at the resistor in the same way as the (over) current detector 71, and when the voltage is higher than the conduction voltage of the zener diode, the thyristor Q8 is turned on to stop the driving of the controller 66 Let's do it. In this case, the resistor R20 and the capacitor C22 are used for the stable operation of the thyristor Q8.

In addition, the inverter circuit includes an input voltage detector 69 to protect the inverter circuit and to prevent overcurrent from being input to the lamp when the inverter circuit is used in an unstable power supply voltage, especially when a voltage outside the rated voltage range is applied. The voltage detector 69 stops the operation of the inverter when the input voltage is out of the prescribed range, and is configured to allow the inverter circuit to resume normal operation when the input voltage returns stably.

Referring to FIG. 16 again, the voltage detecting unit 69 first rectifies the voltage and charges the capacitor C7, and the charged voltage is detected by a voltage detecting circuit composed of resistors R18 and R23. When the detection voltage rises above the predetermined voltage, the die solution Q3 is turned on and the transistor Q5 is also turned on to discharge the power input to the controller 66 to ground to stop the driving of the controller. After that, when the input voltage returns to normal, the inverter operates again.

This operation occurs when the controller 66 is turned off every time the overvoltage is applied, and when the inverter is stopped, it does not turn on again. Therefore, the inverter operates only when there is an error in the applied voltage when using the driving circuit of the present invention and the inverter operates in the normal operation so that the inverter can always maintain the normal operating state. In addition, it is apparent that the die solution Q3 for driving the transistor Q5 at the time of voltage detection may be used by changing the zener diode to set the voltage so as to perform the same operation.

Figure 9 shows the use state as a front view and a side view of the billboard according to the present invention. In general, the diffusion plate 36 is installed on the front surface of the upper plate 30 of the advertisement board, and the driving circuit 50 is installed outside to supply power. The user may advertise by attaching letters or figures for advertisement on the surface of the diffusion plate 36. In addition to advertisements, billboards can be made compact and their photos can be attached and used for the same purposes as photo frames.

The billboard using the capillary fluorescent lamp of the present invention also has the advantage that the advertising area can be greatly enlarged to the extent that the place allows. In other words, the billboards as described above can be set as one unit, and the area can be enlarged by configuring the (horizontal X vertical) units in a matrix manner, for example, adjacent to each other in the same size as 3X3, 4X4, 3X4. Can be. In particular, by applying or filling the inside of the receiving grooves 32 and 42 or the wire storage grooves 34 and 44 (which form both ends of the foreground lead groove) without using the wires 28 during such expansion, It has the advantage of being easy to manufacture and easy to repair later. As described above, holes (48 in FIG. 4) may be formed on the side surfaces of the upper and lower plates, respectively, to be coupled to the adjacent billboard panels, and may be mutually coupled using the circular rod 49. Of course, adhesives can be used for firm bonding. Although not shown in detail, the billboard shown in FIG. 12 may be equally applicable.

Furthermore, the fluorescent lamps 20 and 24 are disposed on each of the plurality of billboards composed of the upper plates 30 and 30a and the lower plates 40 and 40a as described above. The luminance of the billboard can be integrally controlled using the driving circuits 50 and 50a.

In addition, by connecting and controlling the respective driving circuits 50 and 50a for each of the billboard units, the luminance state of the billboard can be arbitrarily adjusted. For example, in the case of an enlarged billboard composed of 2 × 2 (00,01,10,11) billboard units, the unit at the position of “00” may be controlled by turning on the lights, turning off the others, or lighting them sequentially. . In addition, by changing the color of the fluorescent lamp can exhibit a variety of lighting effects of the billboard.

According to the present invention as described above it is possible to manufacture a smaller, thinner than the billboard using a conventional fluorescent lamp, and also easy to attach and detach the fluorescent lamp, there is an effect that can significantly reduce the energy consumption to save energy.

1 is an exploded perspective view of a billboard installed with a conventional fluorescent lamp,

Figure 2 is a wiring diagram of the tubular fluorescent lamps according to the present invention,

3 is a structural state diagram of the tubular fluorescent lamps used in the present invention,

4 is a perspective view showing the structure of the lower plate according to the present invention;

5 is an installation state of the tubular fluorescent lamps disposed on the lower plate,

6 is a separated state of the billboard according to the present invention immediately before the top plate is coupled,

7 is a partial side cross-sectional view of the upper plate and the lower plate along the line AA ′ of FIG. 4 in a coupled state;

8 is an embodiment of a driving circuit of the present invention;

9 is a front view of the billboard according to the present invention;

10 is a wiring diagram of another embodiment of a capillary fluorescent lamp according to the present invention;

FIG. 11 is a partially enlarged plan view of an installation state of one end of the tubular fluorescent lamp of FIG. 10; FIG.

12 is a partial side view of the tubular fluorescent lamp of FIG. 10;

13 is a separated state of the billboard according to the present invention before being combined with the top plate,

14 shows another embodiment of the driving circuit of the present invention;

15 and 16 are yet another embodiment of the drive circuit of the present invention separated.

※ Explanation of symbols about main part of drawing ※

10: billboard body 12: front panel

14: character or figure 16: fluorescent lamp

18: ballast 20,24: fluorescent lamp

22: (internal) electrode 26: (external) electrode

28: wire 30: top plate

32: storage groove 34: wire storage groove

36: diffuser plate 40: lower plate

42: storage groove 44: wire storage groove

46: reflector 48: holes

49: connecting rod 50: driving circuit

52: fixing PCB 54: current limiting capacitor

56: stripline 56a: soldering pad

56b: strip line extension

61: overcurrent protection unit 62: noise filter unit

63: bridge rectifier 64: active power factor improvement unit

65: starter 66: controller

67: switching unit 68: resonator unit

69: voltage detector 70: controller breaker

71: current detection unit 72: lamp connection detection unit

Claims (19)

In the advertising board attached to the outer surface of the advertising content is configured by installing a fluorescent lamp for illumination in the interior of the billboard, Accommodating grooves 32 for accommodating both ends of the plurality of tubular fluorescent lamps 20 and 24 are formed at the side portions, respectively, to connect the accommodating grooves 32 and to supply power to the fluorescent lamps 20 and 24. An upper plate 30 on which wire storage grooves 34 for receiving 28 are formed; Closely coupled to the top plate 30, the receiving grooves 42 are formed in the side portion so as to correspond to the receiving groove 32 formed in the top plate 30 to receive both ends of the plurality of tubular fluorescent lamps 20,24 A lower plate (40) formed at each of the wire plates (44) for connecting the receiving grooves (42) and receiving the electric wires (28); A diffusion plate 36 attached to one surface of an outer surface of the upper plate 30 or the lower plate 40 so as to uniformly diffuse the light emitted from the fluorescent lamps 20 and 24; A reflection plate 46 attached to an opposite surface to which the diffusion plate 36 is attached to reflect the light emitted from the fluorescent lamp 20.24 to the outside; And supply power to the tubular fluorescent lamps 20 and 24 through the wires 28 extending through the wire storage grooves 34 and 44 formed by the combination of the upper plate 30 and the lower plate 40. A line filter for receiving AC power, a rectifier circuit for converting an AC voltage input through the line filter into a predetermined DC voltage, an inverter for outputting a DC voltage output from the DC circuit as a high voltage AC voltage, The driving circuit 50 includes an applied voltage control unit for adjusting a voltage size to adjust the luminance applied to the fluorescent lamps 20 and 24 and a brightness control unit for adjusting the luminance of the fluorescent lamps 20 and 24. Advertisement board using a tubular fluorescent lamp comprising a). delete delete delete delete delete delete In the advertising board attached to the outer surface of the advertising content is configured by installing a fluorescent lamp for illumination in the interior of the billboard, To fix a plurality of tubular fluorescent lamps 20, the soldering stripline 56 extends in the longitudinal direction, and the stripline extension 56b is formed inward from the stripline 56, and the tubular fluorescent lamp Soldering pads 56a for fixing the internal electrodes 22 at both ends of the lamp 20 are formed adjacent to the inside thereof, and currents of which one ends are connected to the soldering pads 56a and the stripline extension 56b, respectively. A limiting capacitor 54 is further installed, and one end of the strip line 56 has a fixing PCB 52 open for power supply from the outside, and a lower plate 40a for accommodating the fixing PCB 52. And a top plate 30a formed on an inner surface of the upper plate 30a and a top and bottom coupled to the lower plate 40a to accommodate the fixing PCB 52, and a power source to the tubular fluorescent lamp through the stripline 56. To receive commercial AC power for domestic use A filter, a rectifier circuit for converting an AC voltage input through the line filter into a predetermined DC voltage, an inverter for outputting the DC voltage output from the DC circuit as an AC voltage having a high voltage, and a self-oscillation for starting the inverter. A starter circuit and a driving circuit 50a comprising an applied voltage control unit and a brightness control unit for adjusting a voltage size to adjust the luminance applied to the fluorescent lamp 20 are connected and are radiated from the fluorescent lamp 20. The diffusion plate 36 is attached to any one of the outer surface of the upper plate 30a or the lower plate 40a so as to uniformly diffuse the light, and emits light emitted from the fluorescent lamp 20 to the outside. Advertisement board using a tubular fluorescent lamp, characterized in that the reflection plate 46 is attached to the opposite surface on which the diffusion plate 36 is installed to reflect. delete delete delete delete delete delete The method according to any one of claims 1 to 8, The driving circuit includes an overcurrent protection unit 61 for limiting overcurrent, inrush current and / or surge voltage generated when a commercial power supply is used, a noise filter 62 for blocking electrical noise, and the noise filter 62 Bridge rectification unit 63 for rectifying the commercial AC voltage passing through the DC), an active power factor improvement unit 64 for increasing the efficiency of the DC voltage passed through the bridge rectifier 63, and the active power factor improvement As an inverter for supplying power to the lamp by using the DC voltage input through the unit 64, the starter 65 for generating the drive power of the controller 66 and the power supply of the starter 65 A controller 66 that is operated to generate a switching pulse for inverter operation, a switching unit 67 for generating a frequency signal using the switching pulse output from the controller 66, and the switch. Touching billboard with customs fluorescent lamps comprises a resonance section 68 to be supplied to the lamp to generate a high frequency signal using a frequency signal input from the 67. The method of claim 15, The active power factor improving unit 64 includes an inductor T2, a switching FET Q1, a gate current limiting resistor R7, a smoothing capacitor C7, an overcurrent detecting resistor R14, and an overcurrent to the controller U1. Resistor R11 for transmitting a signal, a capacitor C12, a controller U1 for controlling an active power factor improvement circuit, and resistors R2, R9, for detecting input and output voltages and inputting the same to the controller U1. R13, R4, R8, and R10, a resistor R1 and a capacitor C9 for applying an initial starting voltage to the controller U1, a diode D7, a capacitor C5, and a detector for supplying a stable power source. A billboard using a capillary fluorescent lamp comprising a resistor (R5) and a capacitor (C8) for compensating the comparator of the circuit, and high-speed diodes (D1, D4) for transmitting the output voltage and current of the power factor correction circuit. . The method of claim 15, A capillary fluorescent lamp further comprising a voltage detector 69 for detecting the height of the voltage applied to the inverter and controlling the operating state of the controller 66 when a voltage higher than a set voltage is applied. Billboard using. The method of claim 15, The controller circuit for stopping the operation of the controller for operating the inverter when the over-current flows to the inverter, and detects the current flowing through the inverter to transmit the overcurrent detection state to the controller breaker 70 Advertising board using a tubular fluorescent lamp characterized in that it further comprises a current detection unit (71). The method of claim 15, The driving circuit detects the connection state of the lamp and the lamp further comprises a lamp connection detection unit 72 for stopping the operation of the inverter when the lamp is not connected.